Tsutomu Maruyama

This inventor holds 16 USPTO granted patents and 7 published patent applications. Top assignees: Sony Corporation, Sony Group Corporation. Active years: 2002-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Maruyama. Retrieved from https://idiyas.com/inventor/tsutomu-maruyama

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 16 (Patent Applications = 7)

% Patents Active = 6.3

Average Co-Inventor Count = 2.2

ph-index = 3

Forward Citations = 38(Granted Patents)

Location History:

Chiba, JP (2002 - 2011)
Kanagawa, JP (2012 - 2015)

Company Filing History:

Sony Group Corporation

patents

Years Active: 2002-2026

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12730058 - Particle sorting apparatus and particle sorting method (2026-09-08),

2. 12613180 - Particle isolation device, particle isolation method, and program (2026-04-28),

3. 8934324 - Light source and recording apparatus (2015-01-13),

4. 8902942 - Laser apparatus and bio-imaging apparatus (2014-12-02),

5. 8537647 - Recording apparatus (2013-09-17),

6. 8462599 - Optical oscillation device and recording apparatus (2013-06-11),

7. 8416671 - Recording apparatus (2013-04-09),

8. 8406261 - Laser driving device and laser driving method (2013-03-26),

9. 8218592 - Laser device, optical pickup, and optical disk device (2012-07-10),

10. 7978792 - Reproducing apparatus and method, signal processing apparatus and method, and program (2011-07-12),

11. 7539108 - Optical information reproduction apparatus and optical information reproduction method (2009-05-26),

12. 7301875 - Information recording device and information recording method (2007-11-27),

13. 7126899 - Optical recording medium processing device and focal point control method thereof (2006-10-24),

14. 7099243 - Optical pickup apparatus, optical disc apparatus, and tracking control method thereof (2006-08-29),

15. 6654323 - Method of tracking servo for optical pickup device (2003-11-25),

Title: Tsutomu Maruyama: Innovator in Laser Technology

Introduction

Tsutomu Maruyama is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of laser technology, holding a total of 16 patents. His work has advanced the capabilities of light sources and bio-imaging apparatuses, showcasing his expertise and innovative spirit.

Latest Patents

Maruyama's latest patents include a light source and recording apparatus. This invention features a mode-lock laser unit that incorporates a semiconductor laser and an external resonator unit. It emits a laser beam with a predetermined frequency, utilizing a saturable absorber unit and a gain unit. Another notable patent is a laser apparatus and bio-imaging apparatus, which includes a mode-lock laser unit, an optical modulation unit, and a reference signal generation unit. These inventions highlight his commitment to enhancing laser technology for various applications.

Career Highlights

Tsutomu Maruyama is currently associated with Sony Corporation, where he continues to innovate and develop cutting-edge technologies. His work has not only contributed to the company's success but has also positioned him as a key figure in the field of laser technology.

Collaborations

Maruyama has collaborated with notable colleagues such as Goro Fujita and Isao Ichimura. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Tsutomu Maruyama's contributions to laser technology are significant and impactful. His innovative patents and collaborations reflect his dedication to advancing the field. His work continues to inspire future innovations in laser applications.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

7 patents pending: